Cheap, plentiful food is an American tradition. We spend a smaller percentage of our income on food than any other nation. We feed much of the world with our surpluses. Consumers, retailers, and restaurants throw away one-quarter of our food stock every year. And yet data collected by the federal government show that almost 12 percent of American households either suffer from hunger or worry about going hungry. Why are so many Americans afflicted with food insecurity during such prosperous times? According to this book, it's not simply an artifact of poverty: even most of the poorest homes...